不错, 10% rule 和以修理费来判断 MSN Money's Liz Weston suggests dropping the additional coverages when the premiums reach 10 percent or more of the potential payoff. In this case, the $242 premium doesn't quite meet the threshold. CarInsurance.com consumer analyst Penny Gusner says she looks less at the cost of coverage than at the value of the car. "If you wouldn't repair it for a major mechanical issue, you probably shouldn't insure it for comprehensive and collision," she says.